Machine for crushing and grinding



G; H. 4FRASER* MCHINE FOR CRUSHING ADI- GRINDING Apr. l0, 1923.

2 sheets-sheet l Original Filed Mar'. 3l, 1917 I WITNESS'ES:

Apr. 1o, 11923, 1,451,156

' G. H. FRASER MACHINE FOR CRUSHING AND GRI`NDING Original Filed Mar.3l, 1917 2 sheets-sheet 2 INVENTOR WITNESSES:

material Patented am. le, ieee.

- resina Toreros.

GEORGE H. rnfisnn, or BROOKLYN, new YORK.

MACHINE FOR GRUSHING AND GRINDING.

Application filed March 31, 1917, Serial No. 158,825. Renewed December15, 1922.

To all whom t may concern.' e

Be it known that I, GEORGE I-I. FRASER, citizenof the United States,residing in the borough of Brooklyn, county of Kings,

city and State of New York, have invented certain new and usefulImprovements 1nv and aims to provide certain improvements therein.

The invention relates more particularly to rock crushers of the typehaving a plurality of crushing rolls within an annular die in which thecrushing is effected between the periphery `of the rolls and the innerface of the die. In some examples of such ma chines the die revolves andis either held in position yieldinglv by the rolls which support it, orrigidly by a shaftk supported in fixed bearings and connected to the dieby a head or spider, the rolls being pressed outwardly by springs toresist a crushing pressure from the inner face of the die, and beingmovable radially of the latter to yield to adapt themselves to the work.Y Means are generally provided for driving one of these parte, and theother parts are generally rotated by traction from the driven part. if

My present invention aims to provide an improved crusher or pulverizerespecially applicable to the type in which the die is mounted on afixedaxis and is the driven member. but includes many features of iin-Vrolls, improved means for guiding'th'em,v

for transmitting all or part of the crushing: thrust from one rolly toanother, improved means for holding the die, improved means forcontrolling the size of dischargedl from the die, and various details ofimprovement in the construction and the arrangement of the several partsof the machine, all of whichwillv be more fully hereinafterv Set forth`with `reference to the accompanying drawings, in which,

Fig. l is a side elevation partly in vertical axial mid-section,` of aCrusher in which the die isdriven and mounted'on a fixed axis, showingthe preferred form of my' invention as adapted to a *Crusher of thistype Fig. 2 is a frontielevation thereof-partly Vbroken away and insectionon thelines 2 2 of'Fig'fli to show the' internal parts; and Vthereof partly broken away and in section on the lines 3-@3 of Fig. 1 to`show the internal parts.

Referring to the drawings, let A'indicate a frame, B the ring or die, Ctherolls, D their shafts or axles, E the' roll carriers or bearings, Sthe. crushing springs or means. and Z the adjusting screw.

In the type 'of machine shown, the ring revolves at a speed sufficientto causethe material to be crushed to be held on the concave inner4crushing face of the ring by centrifugal force, and the rolls `areVrotatably held and are pressed against this` face to crushlthematerialthereon. lThe main the base. When the ring is the driven member as hereshown, it is vcarried by a hollow wheel or cup-shaped heador spider Gmounted on a shaft H carriedfrom supports I on the base A, and is drivenin any suitable manner, yas by a pulleyJ which may be mounted on: aLshaft K1 with clutch L1 and pinion M driving gea-rll/I1 on shaft H.Power applied torevolve the `ring causes Fig. 3 is a fragmentary rearelevation eoL the rolls to revolve `by traction, and the movable' rollcarriers permit the rolls to move inwardly to adapt themselves tothecrushing operation. Materialis fed/.on'the inner face ofthe descendingIside of the ring in front of one of the 'lower rolls from a feed hopperN through a chute O, and revolves with the ring, passing 4underthe rollsuntil crushed sufficiently lto flow -overv the sides of the ring. Theyring and rolls". are enclosed in a crushing' chamber yin the casingP. lAs thus e y fai; Vdescribed the parte maybe spokes @extending :forwardlyand Vrpreterably in parallelism with the shaft H, vwhich at theirforward ends yare separably connecte'd to the ring` fB,-preferably bypassing through holes c in a narrow flange or lug e on theoutenperiphery of the ring,l which is clamped against the spokes by nutsto make a separable but not absolutely rigid connection between the ringand head.v The spokes or arms bconstitute a cage between the headandring, through whibhdischarge `from the ring can pass to the casing,and by which the yring can be held andrdriven from the hea-d with anamountof flexibility determinedby the sizeor character oi the spokes,and the tightness with which they Lare attached to the respectivefparts. Preferably the spokes are slender enough and of sufficientlylflexible material, as ywroughtiron or steel, to give. a very slight-motion between the head and ring suilicient to prevent the vibration ofthe flattertrom crystallizing the cast metal of jthehead orthe driveshaft,butnot so much as topreventithe desired holding, driving andpositioning of thering from the head. As shown, the spokes ZJ havereduced rear ends g ffittingholes Zt inthe disc and held therein by nutsz', and the body of .the spokes is enough larger than its ends toprovide shoulders against which the head and ring may be elampedmoreorless tightly to position them and hold them with the desiredtightnessto,

give more or less .'ilexibility. y

Accordingfto another feature of improvement,eachrcrushing roll issupported each side of the ring to resist a crushing pressure "from the`inner llace of the latter, and means are preferably provided forednalining the ypressure at each side or' the roll, and when stwoformore rolls are used, these means prett-A l erably react `'from each rolltoward the other :er other-s, and from each side ot the rolls :towardthe vCorresponding means at the other lside of therol'ls,A to the end ofutilizii'ig all .the pressure and thrusts of the `rolls as a :crushing`force, and lapportioning this belLween the'rolls so that it will beuniform or .fbalanced lat leach side thereof.

Pre-erabl-yeach rollis movably carried so fthat it "can Llineve inparallelism with the axis of the die, as by being pivotally moiintv fedto swing on anfaex-is parallel with that' axle to prot ot the shaft H.As shown, 'the frame A carries a hollow or tubular or apertured supportor member Z which is pivotally or slidingly detachably connected toit bypivotal bolts l and extends upwardly atthe side oi the die, and has.three approximately equi distant earsj, one at thebottom andthe othersnear the top of its upwardly extending irontA which have bores Zr inwhich are mounted or iixed pivotal shafts or pins Z ez-ztending.

having a bored head 79 in whiehthe axl D is 'tixed or keyed within thespieler. rlfhe axle D extends through .the roll and proects in front ofthe ear j and into linewith the front endorp thepin Z, and the frontside of vthe carrier comprises a. separate arm g pivotally mounted onthe front end of the pinZ and having a bored head i fitting overand-iixed orkeyed to the frontend oi 'the axle.

As shown, the top roll is pivotally mounted from a point slightly belowits shaft. the

'feed roll -is suspended lfrom a point aboveA its shaft, and the otherroll is supported from a point below its shaft and intermediate oit itsend and the otherlower roll, so that its carrier inclines upwardly andoutwardh7 and each carrier is lpivoted in advance of the point at which.its roll 'engages the ring7 so that in use the rolls pull on thecarriers as tension members as the ring revolves when the feed hopper ison the side shown. This arrangement is not essential, however, asthefeed hopper may be placed on the other side,

a' seat s therefor-'being provided "at eachv side` so that when desiredthe feed can be against the carriers, which will then act as compressionmembers lin resisting the tendency of the rolls to travel with the'ring.

When the rolls are rotatably mounted cn vthe carriers by revolying oniixedaxles or studs as shown, the bore ot the roll hub issuiiifi-ientls,Y large to permit placing a semicircular lining oibearingmetal within it7 which keyed on the pressure side of theectthe'latte'r Afrom wear from the roll. The hub t o't each roll is heldbetween theA heads pand i" of the carriers to position it'axially, andthe parts are lubri- I cated in any suitable manner, as by an oil lili),

llo

preferably reacting against or ii Each roll is held or pressed outwardlyuniformly at each side oi" its crushime` tace, by compression means ateach side ot the roll supported by similar means at the other side otthe roll,

` and acting expansively to pern t desiredL radial movements of the rolland axially to balance the load at each side of the roll, and thesemeans preferably react toward two or more ot the rolls with torce thatis countervailing in two or more directions, so that the pressure andthrusts incident to crushing are contined within the ring` and utilizedbetween the several rolls as crushing forces. This may be accomplishedin various ways, but l prefer to use the means shown, in which aradially and axially movable 'thrust member or link l is pivotallyconnected to each carrier head and inclines inwardly and is pivotallyconnected to a sliding, floating, or axially movable or adjustablemember or transmitter L, which receives the thrust of each member K andtransmits it to each other member, and moves both axially and radiallyto eiluffilizeV the thrusts between the membersvl at one side ot theroll, and to adapt itself to their variations in inclination incident tomovements of the respective rolls. The thrust members K have pivotalconnections permitting their movements in the several directionsnecessary to both axial and radial movement ot the transmitter L, and'the parts preferably termed with abutting faces y or other knucklejoint provisions limiting,v their relative movement past a predeterminedpoint, as the scad center for example, by which excessive movement isprevented, while the necessary intermediate movements are permitted. Thecompression members and transmitters are preterably duplicated 'at eachside of the roll, and the transmitters are disposed wardly Ell . ot thecarriers. so that the compression members diverge or incline outwardly.,radially and axially, and expand as the transmitters are moved apart,and collapse as they aw moved toward each other, and between thetransmitters are disposed preferably ripht hand and lett hand adjustingscrews acting expansively, axially oit the die, to .torce thetransmitters outwardly and cause the com-- pression members to actobliquely to hold the carriers and their rolls outwardly to re sist acrushing pressure. The transmitters shown are slidingly lfeatheredaxially, and have respectively right hand and lett hand screw/threadsengaging the screw Zby which the transmitters can be adjusted toward ortrom one another' to compress the. springs against the transmitters andincrease or diminish their action, either to increase crushing pressureor take up wear. By screwing the transi'nitters together sullicientlythe parts can be collapsed to permit the rolls to move inwardly to clearthe lconcavity ot the ring for permitting` removal ot any roll, or ofall the rolls from the ring. Each transmitter is prevented from rotationby a iorked arm a enga-ging some tixed part, as thehub n tor example,which serves to prevent displacement while permitting necessarymovement. The inward collapsing' of the thrust members. gives ample roomfor adjustment oppositethe hub of the spider, and the knuckle-joint,preventing adjustment past the dead center ensures against thethrust members getting into contact with the end of the shaft H.

My invention preterably provides'means torsupporting the pivotal studsinternally of the spider, which is preferably done by connections or tiebars extending 'from one studto another and pinned on the ends of theseinwardly yott-he carriers, so that a strain yapplied to either stud istransmitted to the others, and all are bound togetherat their innerends.

To control the size of material escaping from the die, my inventionprovides a. cheek piece preferably at each side of the die, which isiixed` preferably adjustably, at a point distant from the side tace ofthe die .corresponding to the maximum size desired j for the crushedproduct, and held in this position by supports extending 'through theinterior ot the die. Preferably an annular cheek piece is mounted ateach side of the die ladjustably on three or more fixed rods R which areremovably carried in holes c in *theI support Z, and'serve to hold thecheek pieces rigidly in the desired posi ti(` n'r'el-l atively to therigidly held die. so that a uniform space 'tor discharge ot material ismaintained at each side ot the latter. n

The casing' P is shown as a sheet metal casing removably mounted on thetrame A and 'enclosing the crushing parts and support Z. y ,A

In operation, when the ringis supported as shown, it will supporttherolls` which will beV movable asa grouppassively to adapt themselves tothe ring;` or the material therein, and individually movable radially toexert a crushing pressure. and. to equalize the crushing; pressureofeach. The means pressing each roll 'outwardly will vreact against theothers, andthe expansive means at eachside of the rolls will ensure acrushing pressure directly in the line of work. `rl`he balancingmeansextending` through the ring` from one side to the other ot the rollcomprising the screw 'd in theconstruction shown will balance the loadand relieve the parts of any uneven strains, apportionin the loadluniformly over the bearingsurfaces and pivotal provisions.

The transmitters will float radially to equalize the thrustv members atthe respective sides of the rolls,A and the adjusting screw and pressuresprings will iioatfaxially to balance the load between the two sides ofthe rolls. The screw will act as an axial compression member, and alsoserve for adjustment to vary pressure or taire up wear, and forcollapsing' the parts to permit removals.

The support Z and the entire internal mechanism can he bodily withdrawnfrom the ring' upon disconnecting' the internal cheek piece, whereupon`these parts can bA withdrawn forwardly by sliding' the support outwardlyon the base, or they can be swung out of the die by swinging' thesupport on either of its attaching' bolts as pivot. The ringcan then bedis nnected from the spider and another placed there n.

lf preferred the support Z and the internalparts may remain stationary,and the ring and spider may be removed by sliding; these and theirsupports E rearwardly upon releasingv them from the base, y

lt will be understood that my invention is not limited to the particulardetails of construction, arrangement and combination of parts, set forthand shown as constituting its preferred form, nor to the particular typeof machine to which it is shown as applied, since my improvements can beavailed of in whole or in part in connection with such types of machinesor according to such modifications or'adaptations, as circumstances orthe judgment of those skilled in the art may dictate, without departing'from the spirit of the invention.

The support Z has a bifurcated portion comprising' rearward feetstraddlinej the ring' as shown in Fig. 3 and projecting rearwardlybeyond the center of gravity of the weight it carries and traversed byits' pivotal bolts T, and the support l has a bifurcated portioncomprising forwardly projecting feet V meeting the feet U and formingwith them the upper part of the outlet a as best seen in Fig. l.

l do notA claim herein the improvements claimed in my companionapplications Number 158,824 filed March 3l, 11.91"?, ane Number 158,823filed March 8l, 19M".

What l claim is :e

l. In combination, an annular crushing;- die revolving iny anapproximately vertical plane on a fixed axis and lia-ving an internalcrushing face, a movable and rotatablev crushing roll within andeccentric of said die and having a peripheral crushing face reciprocalto the inner face of said die, means for revolving one of said parts, a

connection between said non-rotative meansr and said supporting meansaxially parallel with the airis of said die.

Q .ln combination, an annular crushingv die having; an internalcrushing; face, a mova ble and rotatable crushing -roll within andeccentric to said die and having` a crushing face reciprocal to that ofthe latter, means for revolving one of said parts, a framev forsupporting said parts comprising al supporting' member at the side ofsaid die, and a movable carrier on which said roll is rotatably nountedcomprising an arm at the tion extending through said die and movablymounted on saidmember at the inner side thereof, and a separable portionat the outer side of said member. movably mounted thereon and separablyconnected to said inner portion of said carrier.

3. ln combination, an annular crushing die revolving in an approximatelyvertical plane and having an internal crushing face, a rotatablecrushing' roll within and eccentric of said die and having a peripheralcrushfrece reciprocal to the inner face of said die, means for revolvingone ofsaid parts, means aifording` a base for said parts affording' anoutlet aperture below said die, and a non-rotative support for said rollmounted exteriorly of and below said die and having a portion extendingpast one side of said die on which said roll is rotatably sustained andhaving a. laterally proj ectingi` bifurcated portion below andextending' beneath the periphery of said die at each side of said outletaperture for sustaining' said support from said base and affording,` anopeningy below said die to said aperture.

el. ln combination, an annular crushing' die revolving on a fixed axisand having an intei'nal crushing face, a movable and rotatable crushing'roll within and eccentric to said die and having a crushing facereciprocal to that of the latter, means for revolving' one ot saidparts, a revolvingmember connccted to one side of said die, frame forsaid parts comprising;` a supporting portion at the otherside of saiddie, non-rotary cheek pieces mounted at the inner and outer sides ofsaid. die and between which said die rotates, and a support for theinner one of said cheek pieces extending through said die.

5. ln combination, kan annular crushing inner side of said roll having arigid poraarts non-rotative ii'iovahle means on which y said roll -isrotatably mounted, and axially obliquely outwardly inclined holdingmeans inwardly of the ai'is of said roll arl opposite and actingra'lially and oblqu ly out-- wai-diy against said non-rotative means tohold said roll outwardly toward the inner face of said die to resist acrushing pressure therefrom.

6. ln combination, annular ci ushing die revolving in an approxi matelyvertical plane and having an internal crushing face, a mov alle androtatable crushing roll within and eccentric of said die and having aperipheral crushing face reciprocal to the inner face f said die, meansfor revolving one of said parts, means for supporting said parts,nonrotative movable means on which said'roll is rotatably mounted,axially obliquely outwai-ally inclined holding means inwardly of theaxis of said roll and opposite acting radially and obliquely outwardlyagainst said nonrotative means to hold said roll outwardly toward theinner face of said die to resist a crushing pressure therefrom, andtransversely movable sustaining` means movable transversely of thedirection of stress of said holding means `for varying the inclinationthereof.

7. In combination, an annular crushing` die revolving in anapproximately vertical plane and having an internal crushing` face, amovable and rotatable crushing roll within and eccentric of said die'andhaving a peripheral crushing face reciprocal to the inner face roi" saiddie, means for revolving` one of said parts, means for supporting saidparts, nonrotative movable means on which said roll is rotatablymounted, axially obliquely outwardly inclined holding means inwardly ofthe axis of said roll and opposite and acting radially and obliquelyoutwardly against said non-rotative means to hold said roll outwardlytoward the inner face of said die to resist a crushing pressuretherefrom, and ially movable sustaining means movable axially of saiddie and sustaining said holding means for varying the inclinationthereof.

8. In combination, an annular crushing die revolving' in anapproximately vertical plane and having an internal crushing face, a`movable and rotatable crushing roll within and eccentric of said die andhaving a peripheral crushing face reciprocal to the inner face of saiddie, means for revolving one of said parts., means for supporting saidparts, non-rotative movable means on which said roll is rotatablymounted, and axially obi-V lioluely outwardly inclined pressing meansinwardly of the axis of said roll andopposite and acting radially andobliquely outwardly against said non-rotative means for messing- 'saidroll outwardly toward the inner face of said die to resist a crushingpressure therefrom, and means for radially adjusting said pressingmeans.

9. ln combination, an annular crushing die revolving in an approximatelyvertical plane and havingan internal crushing face. movable androtatable crushing roli withN in and eccentric of said die and having aperipheral 'crushing face reciprocal to the inner face of said oie,means for revolving one of said parts, means for supporting said parts,non-rotative movable means on which said roll is rotatably mounted,axially obliquely outwardly inclined holding means inwardly of the axisof said roll and opposite and acting radiallj7 and obliquely outwardlysaid non-rotative means to hold said against roll outwardly toward theinner face of said die to vresist a crushing` pressure therefrom.l andaxially movable obliquely adjusting sustaining means movable axially ofsaid die and sustaining said holding means for vary'` ing theinclination thereof.

10. ln combination, an annular crushinn` die revolving in anapproximately vertical plane and having an internal crushing face, amovable androtatable crushing roll within and eccentric of said die andhaving` `a peripheral crushing` face reciprocal to the Vinner face ofsaid die, means for revolving one of said parts, non-rotative movablemeans on Awhich said roll is rotatably mounted, oppositelyobliquelyoutwardly inclined holding means inwardly of the axis of said roll andopposite and acting obliquely ra` dially outwardly toward lsaidnon-rotative means to hold said roll outwardly toward the inner face ofsaid die to resist a. crushing pressure therefrom, and means between andconnecting and mutually sustaining said holding` means from one another.

l1. In combination, an annular crushing die revolving on a fixed axisand having an internal crushing face, three or more rotatable crushingrolls within and eccentric to said die and each having a crushing facereciprocal to that of the latter, means for revolving one of saidparts,movable carriers on which said rolls are rotatably mounted respectively,and means obliquely outwardly reversely inclined pressing approximatelyvradially outwardly toward said carriers intermediate thereof andreacting y axially againsteach other to hold said rolls outwardly toresist a crushing pressure from the inner face of said die.

12.' ln combination, an annular crushing die revolving` ona fixed axisand havingan internal crushing face, three or more rolili;

tatable crushing rolls .within and eccentric to said die and each havinga crushing tace reciprocal to that of the latter, means tor revolvingone of said parts, movable means on which said rolls are mountedrespectively, and inclined means'intermediate ot', normally inclinedaxially inwardly trom, and adapted to react obliquely outwardly towardsaid carriers for holding said rolls outwardly to resist a crushing`pressure from the inner tace ot said die.

13. ln combination, an annular crushing`A die revolving in anapproximately vertical plane and having an internal crushing face, amovable and rotatable crushing roll within and eccentric ot said die andhaving a peripheral crushing` lace reciprocal to the inner tace of saiddie, means tor revolving one of said parts, non-rotative movable meanson which said roll is rotatably mounted, oppositely obliquely outwardlymutually sustaining inclined, holding means inwardly ot the axis of saidroll and oppositek and adapted to react obliquely radially outwardlytowardsaid non-rotative means to hold said. roll outwardly toward theinner tace otsaiddie to resist a crushinglpressure therefrom, andadjusting means tor adjusting said holding means fromA one another.

la. ln combination, an annulary crushing die revolving` on a iixed axisand having an internal crushing face, two or more movable and rotatablecrushing rolls within and eccentric to said die and each having acrushing tace reciprocal to that ot the latter, meansl for revolving oneot said parts, movable carriers on which said rolls are rotatablymounted respectively, expansively acting mean-sintermediate of saidcarriers, and axially movable means intermediate of said expansivelyacting means for receiving and Lafraise transmitting the reaction oleach to the other. y

l5. ln combination, an annular crushing die revolving on a i'ixed axisand having an internal crushing face', a movable and rotatable crushingroll within and eccentric to said die and having` a crushing tace`reciprocal to that of the latter, mea-ns for revolving one of saidparts, movable means on which said roll is rotatably mounted, and

axially and inwardly collapsible means at ed, oppositely obliquelyoutwardly inclined holding means inwardly of the axis of said roll andopposite and adapted to act obliquely radially outwardly toward saidnon-rotative means to hold said roll outwardly toward the inner face ofsaid die to resist a crushing pressure therefrom, and

thrust means intermediate of said holding means and transmitting thestress of one to another. y ln witness whereot, I have hereunto signedmy name in the presence of two subscribing witnesses. y y

GEORGE H. FRASER. `Witnesses. i

` Crans. E. DoNNnLLY, AN'roNro BUoNo.

